Polishing compound



(No Model.)

H. L. HAAS.

POLISHING COMPOUND. No. 582,736. Patented May 18, 1897.

WITNESSES: INVENTOR UNTTED STATES IATENT FFICE.

HARRY L. IIAAS, OF NEW YORK, N. Y., ASSIGNOR TO THE ZUCKER & LEVETT & LOEB COMPANY, OF SAME PLACE.

POLISHING COMPOUND.

SPECIFICATION forming part of Letters Patent No. 582,736, dated May 18, 1897.

Application filed December 28, 1896.

To all whom it may concern:

Be itknown that I, HARRY LEOPOLD HAAS, a citizen of the United States, and a resident of the city of New York, in the county and State of New York, have invented certain new and useful Improvements in Polishing Compositions, of which the following is a full, true, and accurate description, reference be ing had to the accompanying drawings, wherero in similar letters denote like parts in the several views.

The object of my invention is to provide a polishing material, such as a rouge or other composition, (to be applied to a polishing-buff or to be used in any other manner,) with a covering of protective material which is also useful in facilitating polishing and cleaning. Prior-to my invention polishing materials of the class to which my invention particuzo larly relates have been formed into sticks or blocks of any desired consistency and composed of abrading material, such as Vienna lime, Tripoli crocus, fine emery, &c., intimately combined wit-h a greasy substance adapted to hold the mass together and with the proper proportion and quality of grease to give body to the block. The polishing material has also been packed in boxes or other receptacles.

I have made many experiments with coatings of various kinds for the purpose of making sticks of lime abrading material an article of commerce by protecting the stick from slacking by a coating which will also be used up with the stick and facilitate the polishing process, but until my present invention without success in securing protection except for a very limited time. I have also found that the coat must be one that will not injure the 40 polishing qualities of the composition in any mannerthat is, a coating that will not gum the bufiing-wheel or get on the work to be polished and produce a greasy or gummy coating on same.

My invention consists in providing the stick or other mass of polishing composition at the parts where subjected to atmospheric influence witha closely-applied adhesive coating composed of a greasy substance intimately 50 combined with a gummy or sticky substance,

the said coating not only serving to protect Serial No. 617,149. fNo specimens.)

the polishing material from dampness or atmospheric influence, but also to stiffen the block or stick to which it isapplied and be ing adapted to mingle with the polishing material when held against the bufling-wheel.

In the case of emery-cake it is impossible to make the emery-cake soft enough and oily enough for the purpose that it is intended for without covering same with'a paper cov- 6o ering. This is done away with by coating the emery-cake with the coating referred to herein.

Figure 1 is a perspective view of a polishing-stick embodying my invention. Fig. 2 is a sectional view of the same stick. Fig. 3 shows another embodiment of my invention.

In said drawings, A indicates the polishing material, and B indicates the protective covering or coating.

0 indicates a box in which the polishing material is packed.

ing material) which is intimately combined and mingled with a suitable greasy or unctuous substance, the proportions and quality of the latter being varied as desired to suit the consistency or quality of composition desired. Generally a hard stiff grease, as stearic acid, has been used, but on account of the character of the coating which I apply to the composition a softer grease may be em- 8 5 ployed and the cost of manufacture reduced.

I prepare a coating composition consisting of an intimate mixture of a greasy substance with a gummy or sticky substance, the proportions of material being Varied to suit the 0 consistency or quality desired. I have found that a good coating composition may be made by intimately mixing one part of gum-copal with two parts of stearic acid, but those proportions may be Varied to suit requirements. 5 Instead of copal the operator may use sandarac gum or other similar hard gum. In all cases, however, the proportion of greasy material in such coating should be sufficient to act as a vehicle for the gum, thus preventing the gum from sticking to the buff. On the other hand, the amount of grease in the coating composition should not be so great as to overcome the cohesive and adhesive properties of the gum.

The coating substance is applied to sticks or blocks of polishing material by dipping the sticks in the coating substance, or by applying that substance with a brush, or by molding or in any other way to form a stiif closely-applied adhesive envelop which protects the stick from atmospheric moisture, so deleterious to unprotected sticks, especially when they contain lime, rendering them liable to slack and become useless for polishing purposes. hen provided with my adhesive moisture-excluding coating or covering, the blocks or sticks may be transported, stored, or kept in stock as long as desired Without the necessity of wrapping or inclosing them in the paper or metal envelops heretofore employed and which have to be removed before the stick could be used.

hen the polishing composition is put into a box C, it will be unnecessary to provide such a box with a cover. Instead the coating substance will be filled into the open end of the box.

The protective coating being of a greasy nature is worn down and softened by friction against the revolving wheel and mingles with the abrading substance, materially assisting the cleaning and polishing of articles. Another advantageous feature of the adhesive coating resides in the fact that because of the stiffness given to the stick or block the chipping of the polishing composition while applying it to the wheel is prevented.

I have found that a greasy material alone, especially when parailin is used, cannot be advantageously employed for coating masses of polishing materials in view of the fact that minute air-spaces exist in such coating, forming small holes which admit moisture and cause the coating to chip away from the polishing material. By intimately mixing gum with the grease the air-spaces are filled, while the cohesion of the particles of the coating to each other and their adhesion to the polishing material will be assured.

Having described my invention, what I claim is- 1. As a new article of manufacture, a polishing composition and a closely-applied adhesive coating therefor, said coating consisting of an intimate mixture of a greasy substance and a gummy substance, substantially as described.

2. As a new article of manufacture, a polishing composition and a closely-applied adhesive coating therefor, said coating consisting of an intimate mixture containing copal and stearic acid, substantially as described.

In witness whereof I have hereunto signed my name this 19th day of December, 1896.

HARRY L. ll'AAS.

In presence of SToWELL \V. LINCOLN, EMMA L. SULLIVAN. 

